Reflections on current components according to CPC concept in a single phase circuit with nonsinusoidal voltage and current waveforms and LTI load

Abstract

PurposeThe purpose of this paper is to show the limitation of current physical components (CPC) concept in a practical application.Design/methodology/approachThe study proposes using the sum of active and scattered currents in the compensation procedure of the reactive current according to Czarnecki's concept as well as in scattered current elimination, to get the optimal energy transfer from the source supply to the load.FindingsThe results show that CPC concept can be apply only when supply circuit voltage does not consist of interharmonics or/and subharmonics. It can also be shown that elimination of particular harmonics of the scatter current cannot be applied in practice due to the change of active power in the circuit. Only complete elimination of scatter current, e.g. by an active filter is possible without any change of active power.Practical implicationsThe paper provides new information about CPC practical implementation.Originality/valueThis paper presents new features of CPC concept.